Comment

Jon Stewart: Parks and Demonstration

420
lostlakehiker10/06/2011 2:51:45 pm PDT

re: #404 Obdicut

What is your math on the ability to sway the election? I don’t get that at all. Why do I have a 1/4000 chance in California to sway the election with a single vote, and a 1/1000 chance in West Virginia?

You really need to show your math if you want to convince anyone.

It’s a model, and all models depart from reality, but the idea is to assume that the election is tight, because the nation is evenly divided. Nobody can influence a landslide, after all.

Now, how to model a tight election? Assume that all the voters flip a coin and then vote, except for you. You think it over, and decide.

Now, what are the chances that the election will be tied, and your vote gives your candidate a 1 point lead and so he wins? Slim, but slim in proportion to the square root of the number of voters. This goes back to the binomial distribution, and the fact that the mass is mostly found within one standard deviation.

Think of it like this: ten thousand and one flips of a coin. What is the chance that it’s tied 5000-5000, before the last flip? More like 1 in 100, than like 1 in 10000. Or, if you want more accuracy, zero point 8 percent.